Unidentified International Atomic Energy Agency (IAEA) inspectors and Iranian technicians are on hand to cut the connections between the twin cascades for 20 percent uranium enrichment at Natanz facility, some 200 miles (322 kilometers) south of the capital Tehran, Iran, Monday, Jan. 20, 2014. Iran has halted its most sensitive uranium enrichment work as part of a landmark deal struck with world powers, state TV said Monday. The broadcast said Iran halted its 20 percent uranium enrichment, which is just steps away from bomb-making materials, by cutting the link feeding cascades enriching uranium in Natanz. (AP Photo/IRNA, Kazem Ghane)